Flue for pilot lights for gas ranges



Feb. 25, 1930.

F. E. SMITH 1,748,194

FLUE FOR PILOT LIGHTS FOR GAS RANGES Filed Nov. 15, 1928 2 Sheets-Shet 1 Inventor By 'W Attorney Feb. 25, 1930. E, SMITH 1,748,194

FLUE FOR PILOT LIGHTS FOR GAS RANGES Filed Nov. 15. 1928 2 Sheets-Sheet 2 Inventor Trec/ 5. 5m);

Attorney Patented Feb. 25, 1930 uni-Ten STATES PATENT OFFICE FRED E. SMITH, F GENEVA, new yoa'i'enssrenon T0 ANDES RANGE AND FURNACE These coma, or GENEVA, new YORK, A CORPORATION OF NEW YoRx- FLUE non PILOT iacrrrs non ens-Barton's- Application filed November 15, 192 8. SeriatNo. 319,542.

The object of this invention is to provide many contained in the flue 9 so that the heat the side wall of the oven of a gas range with, and products of combustion rising from the a special flue which will carry oil the p'rod-. pilot' light pass up; through the flue 13 in nets of combustion and heat of .the pilot light the back of the oven to the pipe 14. Inorder so that the heat from the pilot light will not to light the burner, the automatic control get into or pass through the oven. increases the pilot light, the larger flame of Another object of the invention is to keep which then extends into the oven and which the even as cool' as possible until the. main in turn heats the thermostattube 8 which in burner of the oven is lit for the purpose of turn opens the Valve 7 and permits the gas to cooking. flow in large quantities through the burner and other objects of the invention 3, where it is lit by the pilot-light. These will'be illustrated' in the drawing, described regulatory features, however, constitute no in the v speci tication and point ed out in the part of my invention. claims at the end thereof.

v v Itwillbe understood that in gas ranges In the drawings of this type that are automatically controlled Figure 1 shows a perspective view of ag the food'is placed in the oven by the cook or range inwhieh-the heating ofthe even by housewife-for several hoursbefore the cookthe gas burner is automaticaly controlled by .ing of it will begin, and in due time the autoautomatically turning onor oil the supply matic regulatory features willturn on the of gas from the main burner. gas supply to the oven burner and start the Figure 2 is a horizo'ntalsection on the line ki I th ti however, it is 232* of l igure 1 showingthe special flue desirable to keep the oven at as low a temfor the pilot light in-t'he side wall of'the oven. Pei-{mire as o ibl so that; th r will b a Figure 3 is a section on the line 3*, 3.? 0 little. danger as possible of spoiling the food Figure 2.

Figure 4 is a horizontal 'SCClZlOIl through the gas range showing the modified form of flue for the pilot burner in the side wall of the oven.

' that is left in the oven for the several hours before the oven burner starts to heat the oven. It has been found by experience that the pilot by itself will raise the temperature of the oven from 20-:to 30 degrees 1f the products indicate like parts.

In the drawing like reference numerals of combustion and the heat arising th e- In the drawings referent"? 1111mm 5l1 1 To prevent the oven from being heated by the di ates the baking oven of the gri .4 pilotlight, I provide the special flue above and'2 indicates the broiling oven of the grins described which carries off the products of range; In the broiling oven is placed a burnb ti d th h t; f th il t li ht er 3 to'which is fed a gas supply by the an quickly passes through the flue sov that this J pipe4 fed from a mixer 5 and pipe 6. s The heat is not allowed to mix with the atmossupply of gas to the pip 6 1S C H TOll ll by phere of the oven, butis discharged as ulcka valve 7 Which isop y a thellllostilvt y as possible into the chimney throng the tube This thermostat tube passes through i 14, Thi pr v nt th il t light. it e i w f 0116 Q B This side ll i raising the temperature: of the oven n10re hollow fromtop to bottom of the upper oven than "2 or 3 degrees where otherw se if the from is discharged directly into the oven.

and'the' lower oven. This side Wall of the heat were thrown directly into the oven the oven is made up of twoplat'es of sheet metal, I temperature of the oven would be raised 20 10 and 11 Wltllfiln air space betweenth-emor 30 degrees, andthe quality of the food which constitutes the flue. All penlng i might be impaired or the food might even provided through both of. these plates at the be spoiled before-the eooking'of it began.

pilot 12 and thermostat tube 8. The pilot In Figure 4 I have shown an oven in which 12 is lit continuously and"burns' .n'ormally the side walls are packed with insulating. with a small flame which small flame is nor material such as asbestos. In such case there is no open airspace between the inner and outside walls of the oven. In such case I provide a small tube 20 which is placed in the insulating material so as to carry off the heated products of combustion arising from the pilot light. and discharge same into the flue 13 and pipe 14 of the range. The tube 20 is relatively small, being only a half or three quarters of an inch in diameter. I claim: 7

1. An oven having an inner wall and an I outer Wall on the side, back and top of the oven with an air space between them, said side Walls having an openingthrough them transversely, a pilot light normally burning in said opening between the'inner and outer walls, the air space acting as a flue to carry away from the pilot light the heated products of combustion and keep them out of go the oven.

2. An oven having an inner Wall and an outer Wall on the side, back and top of the: oven, a flue-between said Walls, a vent to which said flue leads, said sidewalls having an opening extending through them transversely, a pilot light normally burning in 'said opening between the inner and outer walls, said flue connecting with said 0 ening and being adapted to carry away rom 3n the pilot light the heated products of combustion and keep them out of the oven.

In testimony whereof I aflix my signature. FRED E. SMITH. 

